301 results
Normal (Negative) Lachman Test for ACL Injury

Andrew Dold, MD @dr.dold.md

#Lachmans #test #ACL #Knee #Injury #Normal #Negative
Normal (Negative ... ) Lachman Test for ... #Lachmans #test ... Injury #Normal #Negative ... #clinical #video
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix

Sensitivity refers to the test's ability to correctly
False-Positive False-Negative ... Contingency Table ... Specificity of a test ... negative for it ... #Contingency #Table
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
Used Diagnostic Tests ... specificity - Falsely negative ... disease) - May be negative ... HLA-DQ8 - High negative ... Diagnosis #Workup #Table
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
vs Noninfective Causes ... HACEK • Culture-negative ... epidermidis • Gram-negative ... #Noninfective #Causes ... #Differential #
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
disease who test ... tests are TN. ... proportion of negative ... tests that are ... true negatives.
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
Hypertension - Differential ... Renal ultrasound, Tests ... sodium loading test ... #Hypertension #Differential ... Screening #Workup #table
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... Drug fever #relative ... #bradycardia #Causes ... #differential # ... infectiousdiseases #table
Normal Simmonds-Thompson Test (Negative) for Achilles Tendon Rupture

In this normal Simmonds-Thompson test, plantar flexion of the
Simmonds-Thompson Test ... (Negative) for ... Simmonds-Thompson test ... #Normal #Negative ... Rupture #Clinical #Video
Dyspnea - Differential Diagnosis and Presentation

#Diagnosis #Differential #Table #Dyspnea #SOB #Causes
Dyspnea - Differential ... #Diagnosis #Differential ... #Table #Dyspnea ... #SOB #Causes
Autoimmune Hemolytic Anemia (AIHA) - Differential Diagnosis Table

Warm AIHA (48-70%)
Cold AHA (16-32%)
 • Donath-Landsteiner HA (paroxysmal
Anemia (AIHA) - Differential ... Diagnosis Table ... AIHA (7-8%) DAT-negative ... #Anemia #AIHA #Differential ... #Diagnosis #Table